Printer s quoin



(No Model.)

D. J. PERRY.

PRINTERS QUOIN.

No. 348,119. PatentedAug.24,1886.

DANIEL J. FERRY, OF PHILADELPHIA, PENNSYLVANIA.

PRINTERS QUOIN.

SPECIFICATION forming part of Letters Patent No. 348,119, dated August 24, 1886.

Application filed February 4, 1886. Serial No. 190,792.

To all whom it may concern:

Be it known that I, DANIEL J. FERRY, acitizen of the United States, residing in the city and county of Philadelphia, and State of Pen 11- sylvania, have invented a new and useful Im provernent in Printers Quoius, which improvement is fully set forth in the following specification and accompanying drawings, in which-- Figure 1 represents a partial side elevation and partial longitudinal section of a printers quoin embodying my invention. Figs. 2 and 3 represent views ofthe inner faces of the parts thereof. Fig. 4 represents a section in line :0 :0, Fig. 1, and a side elevation of the operatingkey.

Similar letters of reference indicate corresponding parts in the several figures.

My invention consists of a printers quoin, which may be readily tightened, and when tightened is prevented from being loosened, especially by the jarring of a print-ingpress.

It also consists of the operating-key of the quoin having novel features, as will be hereinafter fully set forth.

Referring to the drawings, A and B represent the sections of a printers quoin, the contiguous or inner facesof which are diagonal, one face having a rack, O, and the other face a ratchet, D. Pivoted to the heel end of the racksection is a dog or pawl, E, whose nose or point engages with the ratchet D, and the same is held in locking position by means of spring F, which is seated on the section and dog and exerts its pressure on the latter.

In order to operate the sections so as to tighten the quoin in the chase, I employ a key, G, having a pinion or teeth, H, the same entering an opening, J, in the ratchet section and engaging with the rack of the other seetion,whereby,when the key is rotated, the sections are moved, causing a wedgiug or tighten= ing action of the quoin in the chase. In the (No model.)

movement of the sections, the dog E rides freely over the teeth of the ratchet, and when motion of the sections ceases, the dog remains engaged with the proper tooth of said ratchet,

so that slipping of the sections and unlocking of the quoin are prevented.

In order to unlock or loosen the quoin, one of the sect-ions is moved slightly forward, so as to clear the point of the dog or pawl from the ratchet, whereby the dog is permitted to be raised clear of the tooth thereof, and thus the section may berunback and the quoin accordingly released. The keyGhas a cylindrical portion, K, which is adjacent to the teeth H, and forms a bearing on which the key rotates on the quoin, whereb Y said rotation is accomplished with ease and without interfer- 6o ence of said teeth H. A shoulder or collar,

L, is also formed on the key contiguous to the bearing K,which limits the entrance-of the key into the opening J, and also guides the keyin its rotation, avoiding irregular motions thereof. The openingj extends entirely through the section, so that the key may be inserted from either side of the quoin.

Having thus described my inventiomwhat I claim as new, and desire to secure by Letters Patent, is-

1. A quoin formed of the sections A and B, the said section A having a rack, O, and a detent, E, secured to one end thereof, the section B having a ratchet, D, and an opening adapted to receive an operating-key having teeth meshing with saidrack, allsubstantially as described.

2. A quoin-key formed with a pinion, a bearing-surface, and collar, substantially as described.

DANIEL J. FERRY.

Witnesses:

JOHN A. WIEDERsHEIM, A. 1?. GRANT. 

